抚顺镜煤和树脂煤CS2可溶物的族组成和萃取

用CS2对抚顺镜煤和树脂煤进行了索氏萃取，并用柱层析法对萃取物进行了族组分分离，研究了萃取物的族组成和萃取动力学特征。实验结果表明：树脂煤的萃取率远高于镜煤，萃取物中烷烃和芳烃含量较高，而镜煤萃取物主要为非烃；其萃取过程可分为两个阶段，第一阶段速率比第二阶段速率大一个数量级；煤中低分子化合物有游离态、吸附态和共溶态三种赋存形式。

Group Compositions of CS2-Soluble Fractions from Vitrinite and Resinite of Fushun Coal and Extraction

Soxhlet extractions of vitrinite and resinite of Fushun coal were conducted using CS 2 as a solvent. The resulting extracts were separated into different group compositions by column chromatography. The group compositions and extraction kinetics of vitrinite and resinite were investigated. The experimental results show that the extraction yield of resinite is much higher than that of vitrinite, the extracted products of resinite mainly consists of alkyl and aromatic hydrocarbon while that of vitrinite mainly consists of non hydrocarbons. The extraction process can be described by two first order stages, the rate of first stage is one order greater in magnitude than that of the second stage. The low molecular weight substance contained in coal has three modes of presence, including free, absorbent, and co soluble, which might lead to different kinetic stages.